1. A. at B. in C. to D. of
2. A. There B. They C. That D. This
3. A. to climb B. climb C. climbing D. climbed
4. A. see B. saw C. seen D. seeing
5. A. throw B. threw C. thrown D. throwing
6. A. to protect B. protect C. protected D. protecting
7. A. to throw B. throw C. throwing D. thrown
8. A. is B. are C. was D. were
9. A. tradition B. traditional C. traditionally D. traditions
10. A. good B. well C. better D. best